Innate Immune Functions of Immature Neutrophils
Studieoversigt
Status
Status
Detaljeret beskrivelse
Objectives
- Primary objective: To determine the innate immune functions of immature neutrophils in comparison to those from mature neutrophils, sampled from patients with severe sepsis and sepsis shock and in control patients (trauma patients and healthy donors (only mature neutrophils in the latter case)
- Secondary objectives: To determine the fate and span life of immature neutrophils in comparison to mature neutrophils, sampled from patients with severe sepsis and sepsis shock and in control patients (trauma patients and healthy donors (only mature neutrophils in the latter case).
Inclusion criteria
- Patients with severe sepsis or septic shock (according to ACCP/FCCM standard definitions) with > 5% immature neutrophils.
- Patients with a noninfectious systemic inflammatory response syndrome (SIRS), e.g. patients with head trauma or multiple trauma with > 5% immature neutrophils.
- Healthy donors
Exclusion criteria
- Severe immunosuppression (e.g. HIV with < 200 CD4/mm3), treatment with glucocorticoids (> 300 mg hydrocortisone/day) or other immunosuppressive therapy
- Neutropenia (neutrophils < 0.5 G/l).
- Recent chemotherapy or administration of intravenous immunoglobulins within the last 4 weeks.
Endpoints
- Surface expression of receptors of the innate immunity in immature vs. mature neutrophils.
- Production by immature vs. mature neutrophils of inflammatory mediators and reactive oxygen species in response to bacterial agonists.
- Chemotaxis of immature vs. mature neutrophils.
- Phagocytosis of Gram-positive and Gram-negative bacteria by immature vs. mature neutrophils.
- Ex vivo viability and resistance to apoptosis of immature vs. mature neutrophils.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Forventet)
Tilmelding
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Geneviève Drifte, MD
- E-mail: genevieve.drifte@unige.ch
Studiesteder
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-
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Geneva, Schweiz, 1211
- Rekruttering
- University Hospitals of Geneva, Intensive Care
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Kontakt:
- Jerome Pugin, MD
- E-mail: jerome.pugin@unige.ch
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Underforsker:
- Geneviève Drifte, MD
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
- Patients with severe sepsis or septic shock
- Patients with a noninfectious systemic inflammatory response syndrome (SIRS)
- Healthy donors
Beskrivelse
Inclusion Criteria:
- Patients with severe sepsis or septic shock (according to ACCP/FCCM standard definitions) with > 5% immature neutrophils.
- Patients with a noninfectious systemic inflammatory response syndrome (SIRS), e.g. patients with head trauma or multiple trauma with > 5% immature neutrophils.
- Healthy donors
Exclusion Criteria:
- Severe immunosuppression (e.g. HIV with < 200 CD4/mm3), treatment with glucocorticoids (> 300 mg hydrocortisone/day) or other immunosuppressive therapy
- Neutropenia (neutrophils < 0.5 G/l).
- Recent chemotherapy or administration of intravenous immunoglobulins within the last 4 weeks.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Antal grupper/kohorter
Kohorter og interventioner
Gruppe / kohorteGruppe / kohorte |
|---|
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Sepsis patients
Patients presenting sepsis
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SIRS patients
Patients presenting with the systemic inflammatory response syndrome
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|
Healthy subjects
Healthy blood donors
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Innate immune functions of neutrophils
Tidsramme: 12 months
|
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12 months
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Forventet)
Primær færdiggørelse
Studieafslutning (Forventet)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- CER 09-311
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